Melting kettle



MELTI'NG KETTLE Aug. 2s, 1923;

Original Filed Oct. 17, 1921 2 Sheets-Sheet 1 4 l INVENToR;

@kades Siabh,

BY l@ ,L v" j@ as. i

ATTORNEYS.-

Au@ 2a, w23. 1,466,637

c. s. BABE MELTING KETTLE original Filed om. 1'?.v 1921 2 sheets-sheet 2y v v INVENTOR: @harias 5.Banbb5 WITNESSES.-

'I ATTURNYS.

:Patented ugfZS, 1923. i

1,466,637 PATENT OFFICE- CEIIARLES STEWART BABB, OF CHICAGO, ILLINOIS,ASSIGNOR T0 THE BARBER APHALT COMPANY, OF P:Ev-Ill:LADELIHIIIA,PENNSYLVANIA, A CORPORATION 0F WEST VIRGINIA.

MEL'TING KETTQLE.

Application filed October 17,1921, Serial No. 508,414. Renewed.Tanua'rySL 1923.

ioallwzomtmag/concern:

Be it known that I, CHARLES S. BABE., a

citizen of the United States, residing in @hition of melting continuous,i. e., without.

cago, inthe county of Cook and State of I1linois, have invented` certainnew and useful Improvements `in Melting Kettles, whereof the followingis lal specification, reference being had to the accompanyingdravvin2gs- My invention relates to melting kettles more especially formelting asphalt, pitch, tar' or other similar substances or materialsused in street paving or roofing.

Amongst'the objects of my invention are' to secure, in such structures,the highest pos-v sible efliciency in operation; to obviate thepossibility of burning the materials in the course of the meltingg' torender theoperanecessitating delays necessary for successive recharging`as in kettles heretofore. existent;

and in general, to secure utmost simplicity of construction, anddesirability in practice under the lowest costv of manufacture.

In the accompanying drawings,Fig. I is aperspective view of. a. meltingkettle `con veniently embodying my invention.

F ig;' II is a cross sectional view of the same and i p F ig. III is alongitudinals'ctional elevation of the structure.

The melting kettle herein represented as typical of my'invention, isrectangular in form, and, in practice, is preferably constructed :ofsheet metal of appropriate thickness riveted or otherwiserigidly securedtogether. The structure has vertical side and endl walls 1, 2 and 3, 4:lrespectively,v which jointly form an enclosure within which the 'meltingtrough designated by the numeral 5 is suspended. The enclosure serves asa fire box and is accessible through'a charging opening 6 near thebottom of the front end wall 3. It is to be particularly noted that thetrough 5 terminates somewhat shortI of the rear end wall 4. to afford avertical `interspace 7 for the passage of the products of combustion enroute to a flue indicated at 8,

` the latter communicating with said interspace through an opening 9 insaid end'vvall.

It desired', the enclosure may be provided with a bottom as suggested at1.0 in Figs. II

and' III, and'urther strengthened by\chan` nelled reinforcingY rails11-.11 along ,its sides and by angle rails 12-12 at its ends.

'side walls'fll sloping at comparatively steep angles and'rnerging intoa rounded'bottom 16. In this way I obtain greater heat-l i ing surfacearea than possible with troughs vof semi-circular or wholly curved crossseotions and certain other advantages which `will be obvious from`further description.

Along opposite sides said trough hasfcoextensive subdivisions or pockets17-17 into' which the' solids to be meltedare placed for preheating. Thelower edges ofthe vertlcal partitions 18-18 by which subdi- .i

vision is' effected terminate short of the sloping sides of thetrough soas to afford re# stricted openings 19-l9. through which the material,after being fused, may drain into the tank proper.- For the purpose ofaffording greater rigidity, I have provided, at intervals lengthwise ofthe pockets, transverse vpartitions 20F-20. The rounded bottom of thetrough is enveloped by a Ajacket 21, which, as will be'noted ymoreespecially from Fig'. 'III is' open at its ends so that air maycirculate freely therethrough` as` suggested .by

the arrows. The plate 22 by which the jacket isformed is ,extendedvsomewhat along the sloping sides of the trough so that it may beconveniently attached to the latter by riveting o r otherwise. Thecontinuous circulation of air through the jacket 21, it will be seen,serves to prevent burn-ing of thatportion of the contents of the troughwhich is subjected to the greatest heat.

. In order to secure the highest possible efficiency, I aim'to draw theheat' in a general upward direction from the vbottom ofthe fire boxalong the sides of the trough before lleingdischarged through the flue7. Thisv desideratum I obtain 4by providing each of the side walls l and2 near the bottom of the enclosure with a series of inlets 25', and nearthe top with a series of outlets 26, as a consequence ofwhich, lateralcirculation is set up at each side of and throughout the length of thetrough. d From the foregoing, it will be readily apparent' that a.Vmelting kettle constructed in' accordance with my invention is highlyeiiicientby reason of uniform distribution'of the 'heating mediumtoimpinge against all portions ofthe extended surface area ofthe trough,and moreover, by provision of the preheating pockets, the processofmelting maybe carried on continuously While the trough is at Iall timesaccessible fromthe top so that the contents may be removed therefrom byaid of dippers such as ordinarily used in connection ivith meltingkettles.

' lf desired, the structure may be provided with` Wheels or mounted inany approved manner so that it may be readily transferred from place tovplace.

Having thus described my invention, I

claim 1. Almelting kettle comprising" an enclosureserviceable as aglesand merging-into a rounde'd bottom the trough being located Whollyin said fire box.

2. .A melting kettle comprising an enclosure serviceable as a fire box,and a melting trough suspended Within the enclosure, said Atrough beingenveloped by an open-ended jacket through which air is free tocirculatie in order to from direct action of the lire. i A

A melting kettle comprisingan' eneloA sure serviceable as a fire box,and a melting trough suspended vvithin the enclosure having V shapedcross sectionrvvith its sides sloping at comparatively steep anglesandmerging `into a rounded bottom, said trough having also an open-endedjacket enveloping its rounded bottom through which air is free tocirculate in order to protect the contents of the trough from directaction of the most intense heat of the fire. 1

4. A melting kettle comprising an encloP sure serviceable as `a fire boxhaving near the bottom of one end Wall an opening for charging and alsoforadmitting air necessary to support combustion, a flue leading from anopening near the top of the opposite end Wall, and a. melting troughsuspended Within and extending ivhollyinto the fire box, and terminatingshort 'of the last nientioned end Wall of the enclosure toafford a"draft opening and a flue, and a melting` 'vertical interspace forpassage "of the products ofcombustion en route to the flue.

.5. A melting kettle comprising an "enclosure serviceable Aas a fire boxand having a trough suspended within said enclosure, the side vvalls ofthe latter having near the 'bottom inlet apertures in addition to thedraft opening, and nearthe top outlet apertures in addition to thefluefor the purpose of induc- Aing upward draft and 'consequent uniformvdistribution of the heat along the-sides an throughoutfthe length ofthe trough.

6. A melt-ing kettle comprising afire box, and a trough suspended abovethe fire box and extending IWholly thereinto, said trough havingsubdivisions or pockets for storage' and preheating ofthe solid materialwhich fire box, anda melting l trough suspended Within the inclosure,said .trough having shaped cross section with its sides sloping atcomparatively steep auf protect the contents ofthe trough ineens? ingsides ofthe trough to afford restricted outlets through which thematerialA may drain into the'trough proper.

8. A melting kettle comprising an enclosure. serviceable as a fire box,a trough mounted above the firebox and extending directly thereinto soas to be subject directly to lthetlaine and heat of combustion andhaving a sloping Wall,` andl means cooperating with said Wall to formaretaining pocket in, which to receive solid materialto be fused, theliquefied material flowing from thev pocket tothe bottom of the trougl j9. A melting kettle comprising, an enclosure serviceable as a fire box,a trough mounted therein and having a sloping Wall, a .partitioncooperating .With the Wall to form a retaining compartment, and a seriesof transverse partitions subdividing the compartment into a number ofpockets in which to receive solid materialto be fused,

the liquefied material flowing from'v the -pockets to the bottom of thetrough.

10. Aanelting kettle :comprising an ensaid e closure serviceable asy a.firebox, a trough,

substantially V-shaped in cross section and having converging Wallsdepending directly into thefire box so that both Walls are subjectedsimultaneously to the heat of coinbustion, a partition along the upperedge of each Wall infspaced` relation to form retaining compartments inWhich t0 receive solid material to be melted, the liquefied materialflowing from the compartments to the bottom of the trough.

.11. A meltin 'kettlecomprising an enclosure .servicea4 le as a firebox, a trough depending into the fire box and havinga sloping Wall, aretaining means in spaced relation to the wall adjacent the upperportion of the latterto form a retaining pocket in which to receivesolid material to be fused,

the liquefied'material flowing yfrom the pocket to the bottom of thetrough for accumulation, and direct exposure to the heat, the vWall ofthe enclosure having openings adjacent its upper portion to create apath for hot gases running in close proximity to the Walls of theretaining pocket to' promote fusion of the solid material.

12. lA meltingkettle comprising an enclosure serviceable as a re boxhaving a draft opening atene end and a. ue at the other end',`. forminga direct draft channel,

' a 'trough depending into the enclosure and having downwardly'converging Walls terminating in a rounded bottom extending contiguouslyto the draft channel, the flue end of the trough being spaced from theadjacent wall of the enclosure to forma draft passage communicating withthe irebox andthe flue.

13. A meltin kettle; comprising an enclosure servicea leas a fire boxand having a draft' opening and` a Aflue, a Vshaped ,trough dependinginto the enclosure with downwardly converging walls, whereby the gasesof combustion may low along the. bottom of the trough longitudinallythereof, from opening to flue to heat the trough, op-

posed side walls of the enclosure facing the trough walls'havingopenings at the lower and upper edges to create a flow of hot -gasesupward along the trough walls to\heat every walls terminating in arounded bottom runv I ning endwise between 4the'draft opening and flue,the trough terminating' short of the flue.

end wall of .the` enclosure to form a draft passagel communicating withthe fire boxand'ue, a plate covering the bottom of the trough inspacedrelation and provided with open ends to permit flow of gasesthrough .the space, retaining plates mounted in spaced" relation to theupper edge of eachtrough wall to form retaining compartments forsolidmaterial, opposed side walls of the enclosure lfacing the trough wallshaving lower and upper openings to create an-up` trou-ghvwalls. v

15. In a melting kettle, a trough'to receive melted material,j means toretain the solid material-t0 be melted and to permit thematerial as fastas it is fused to drain.

into the trough, and a' frebox receiving thetrough and the retainingmeans in such a manner that the portion of the'trough in whichthemeltedvmaterial is collected and the retaining means enclosing the solidmaterial are both subjected simultaneously and directly to the flame andheat'of combustion. In testimony whereof, I have hereunto signed my nameatChicago, I1linois ,`this 10th day of October, 1921'.

CHARLES STEWART BABB.

"Witnesses: f v e RAYMOND LLEwnnLrN ARNOLD,`

EDNA GmzTRunE GATES.

ward draft to heat every portion of the.

